import Vue from 'vue'
import Router from 'vue-router'

Vue.use(Router)

/* Layout */
import Layout from '@/layout'

/**
 * Note: sub-menu only appear when route children.length >= 1
 * Detail see: https://panjiachen.github.io/vue-element-admin-site/guide/essentials/router-and-nav.html
 *
 * hidden: true                   if set true, item will not show in the sidebar(default is false)
 * alwaysShow: true               if set true, will always show the root menu
 *                                if not set alwaysShow, when item has more than one children route,
 *                                it will becomes nested mode, otherwise not show the root menu
 * redirect: noRedirect           if set noRedirect will no redirect in the breadcrumb
 * name:'router-name'             the name is used by <keep-alive> (must set!!!)
 * meta : {
    roles: ['admin','editor']    control the page roles (you can set multiple roles)
    title: 'title'               the name show in sidebar and breadcrumb (recommend set)
    icon: 'svg-name'/'el-icon-x' the icon show in the sidebar
    breadcrumb: false            if set false, the item will hidden in breadcrumb(default is true)
    activeMenu: '/example/list'  if set path, the sidebar will highlight the path you set
  }
 */

/**
 * constantRoutes
 * a base page that does not have permission requirements
 * all roles can be accessed
 */
export const constantRoutes = [
  {
    path: '/login',
    component: () => import('@/views/login/index'),
    hidden: true
  },

  {
    path: '/404',
    component: () => import('@/views/404'),
    hidden: true
  },

  {
    path: '/',
    component: Layout,
    redirect: '/dashboard',
    children: [{
      path: 'dashboard',
      name: 'Dashboard',
      component: () => import('@/views/dashboard/index'),
      meta: { title: '信息聚合', icon: 'el-icon-s-platform' }
    }]
  },

  {
    path: '/image',
    component: Layout,
    redirect: '/image/wordcloud',
    name: 'Image',
    meta: { title: '图片处理', icon: 'el-icon-orange' },
    children: [
      {
        path: 'wordcloud',
        name: 'WordCloud',
        component: () => import('@/views/image_module/wordcloud/index'),
        meta: { title: '词云生成', icon: 'el-icon-magic-stick' }
      },
      {
        path: 'watermark',
        name: 'WaterMark',
        component: () => import('@/views/image_module/watermark/index'),
        meta: { title: '图片水印', icon: 'el-icon-brush' }
      },
      {
        path: 'ocr',
        name: 'Ocr',
        component: () => import('@/views/image_module/ocr/index'),
        meta: { title: '图片OCR', icon: 'el-icon-reading' }
      }
    ]
  },

  {
    path: '/math',
    component: Layout,
    redirect: '/math/matrix',
    name: 'Math',
    meta: { title: '数学计算', icon: 'el-icon-s-opportunity' },
    children: [
      {
        path: 'matrix',
        name: 'Matrix',
        component: () => import('@/views/math_module/matrix/index'),
        meta: { title: '矩阵运算', icon: 'el-icon-s-grid' }
      },
      // {
      //   path: 'derivation',
      //   name: 'Derivation',
      //   component: () => import('@/views/math_module/derivation/index'),
      //   meta: { title: '数学求导', icon: 'el-icon-connection' }
      // }
    ]
  },

  // {
  //   path: '/visual',
  //   component: Layout,
  //   redirect: '/visual/csv',
  //   name: 'Visual',
  //   meta: { title: '数据可视化', icon: 'el-icon-view' },
  //   children: [
  //     {
  //       path: 'csv',
  //       name: 'CSV',
  //       component: () => import('@/views/visual_module/csv/index'),
  //       meta: { title: 'CSV可视化', icon: 'el-icon-tickets' }
  //     },
  //     {
  //       path: 'excel',
  //       name: 'Excel',
  //       component: () => import('@/views/visual_module/excel/index'),
  //       meta: { title: 'Excel可视化', icon: 'el-icon-document' }
  //     }
  //   ]
  // },

  {
    path: '/document',
    component: Layout,
    redirect: '/document/pdfmark',
    name: 'Document',
    meta: { title: '文档处理', icon: 'el-icon-notebook-2' },
    children: [
      {
        path: 'pdfmark',
        name: 'PdfMark',
        component: () => import('@/views/document_module/pdfmark/index'),
        meta: { title: 'PDF水印', icon: 'el-icon-copy-document' }
      },
      {
        path: 'pdfcut',
        name: 'PdfCut',
        component: () => import('@/views/document_module/pdfcut/index'),
        meta: { title: 'PDF剪裁', icon: 'el-icon-scissors' }
      }
    ]
  },

  // {
  //   path: '/example',
  //   component: Layout,
  //   redirect: '/example/table',
  //   name: 'Example',
  //   meta: { title: 'Example', icon: 'el-icon-s-help' },
  //   children: [
  //     {
  //       path: 'table',
  //       name: 'Table',
  //       component: () => import('@/views/table/index'),
  //       meta: { title: 'Table', icon: 'table' }
  //     },
  //     {
  //       path: 'tree',
  //       name: 'Tree',
  //       component: () => import('@/views/tree/index'),
  //       meta: { title: 'Tree', icon: 'tree' }
  //     }
  //   ]
  // },

  // 404 page must be placed at the end !!!
  { path: '*', redirect: '/404', hidden: true }
]

const createRouter = () => new Router({
  // mode: 'history', // require service support
  scrollBehavior: () => ({ y: 0 }),
  routes: constantRoutes
})

const router = createRouter()

// Detail see: https://github.com/vuejs/vue-router/issues/1234#issuecomment-357941465
export function resetRouter() {
  const newRouter = createRouter()
  router.matcher = newRouter.matcher // reset router
}

export default router
